Riveting-machine.



No. 64!],27I. Patented Jan. 2, I900. J. H. CASSIDY.

BIVETING MACHINE.

(Application filed June 29, 1899.)

(No Model.)

. 9 4 ggww llrvrrnn drains JACOB .ll'. CASSIDY, OF LEAVENVORTH, KANSAS.

RlVETlNG ll/lACHlNE.

SPECIFIGATION forming part of Letters Patent No. 640,271, dated January2, 1900.

Application filed June 29, 1899. Serial No. 722,289. (No model.)

To (tZZ whom it may concern/.-

Be it known that I, JACOB 1'1. CASSIDY, of Leavenworth, Leavenworthcounty, Kansas, have invented newand useful Improvements in Machines forSetting Tubular Rivets, of which the following is a specification.

My invention relates to machines for setting tubular rivets; and myobject is to produce a machine of this character which is efficient andunfailing in action, conveniently portable, and of simple, compact,strong, and durable construction.

To this end the invention consists in certain novel and peculiarfeatures of construction and organization hereinafter described andclaimed, and in order that it may be fully understood reference is to behad to the accompanying drawings, in which Figure 1 represents aperspective view of a riveting-machine embodying myinvention. Fig. 2 isa vertical central section of the same. Fig. 3 is a horizontal sectiontaken on the line 111 III of Fig. 2. Fig. 4 is a vertical section takenon the line lV IV of Fig. 3.

Referring to the drawings, 'where like reference numerals and lettersdesignate corresponding parts, 1 designates the base of the1nachine,said base beinghollow, so as to form a magazine to containrivets, and by preference of circular form. At diametrically oppositepoints it is provided with the upwardly-projecting lugs 2, formed withnotches 3 in their inner sides, and with securing-points 4, dependingfrom its bottom and adapted to be embedded in the bench or table forminga support for the machine in order to hold the latter steady whenoperating upon a rivet. The bottom of the magazine is centrallyperforated, as at 5, to receive a screw 6, whereby the connection of themachine with the table may be made rigid in case of necessity.

The cover 7 of the magazine is of disk form and provided with marginalnotches 8 to receive the lugs 2 in fitting the cover down upon themagazine, and formed integral with said cover is a yoke 9, terminatingat its lower end in an enlargement 10, centrally of the cover, andprojecting vertically upward from the center of said enlargement is thepreferably cylindrical rivetstand or anvil 11, said rivetstand beingprovided in the center of its up per end with a cavity 12. The yoketerminates at its opposite or upper end in a vertical sleeve 13,provided with an internallythreaded bearing 14, of Babbitt metal or itsequivalent, the axis of the threaded passage extending in verticalalinement with the center of the rivet-stand.

15 designates a vertical screw-plunger engaging the threaded bearing 14and provided centrally at its lower end with an inverted conical swagingor riveting point 16, the base being diametrically smaller than thelower end of the plunger, so as to form an annular shoulder 17. Theupper end of the plunger is provided with a handle, preferably in theform of a small hand-wheel 18.

19 designates a tubular rivet-guide fitting telescopically upon therivet-stand and preferably enlarged or flanged outward at its upper end,as at 20, to form a more extended support for the objects about to beriveted together and also to form a shoulder to rest upon the encirclingspiral spring 21, the latter being supported upon the enlargement 10 ofthe yoke. This spring supports the sliding rivet-guide with its flangedend above the plane of the rivet'stand, as shown in Fig. 1, the springyielding to permit said guide to descend under the pressure of theplunger as the latter is actuated to upset the end of the rivet, andthus secure two or more objects together. Before the riveting operationtakes place, however, the cover should be secured reliably to themagazine-base, and in order to accomplish this object I provide arotatable lockin g plate or clutch, said plate 22 be ing of segmentalform, with its ends a sufficient distance apart to easily pass down onopposite sides of the lower part of the yoke 9 as the plate is fitteddown over the enlargement 10 of the same, but not far enough apart topermit the plate to be removed unless it is arranged substantially asshown in Fig. 3, and then slipped vertically upward until disengagedfrom said enlargement. At diametrically opposite points the lockingplateis provided with the outwardly-projecting cars 24, having their outerends beveled and extending eccentricallyof the plates axis of movement,as at 25, so that when the plate is operated by applying pressure in anobvious manner upon the hand-lugs 26, projecting from ears 24, theeccentric ends of said ears engage the notches of lugs 2 with awedge-like action, the movement of the locking-plate in this directionbeing terminated by the abutment of one of the ends against the yoke 9,as shown in Fig. 3. To disengage the locking-plate, this rotary actionis reversed, as will be readily understood, the plate turning in bothinstances upon the enlargement 10 of the yoke as a pivot.

To set a rivet, it is first dropped head downward into the tubularrivet-guide 19, where it will be maintained upon the rivet stand 11 (seeFig. 2) in axial alinement with the center of the swaging-point, becausethe passage through the guide is just large enough to snugly embrace thehead of the rivet. The parts to be secured together, as indicated inFig. 2 by the letters A B, are now placed upon the upper end or flangeof the rivet guide and positioned to receive the rivet at the properpoint. The handle 18 is then grasped and turned to cause the descent ofthe plunger and the swaging-point of the latter to bear upon and embeditself in the topmost part, as A, of the material to be secured. Thepressure of the descending plunger causes the spring 21 to yield as theswaging-point embeds itself in the part A and the guide to move downwarduntil its flanged end assumes a position below the upper end of therivet, which,the pressure of the plunger continuing, successivelyperforates with its sharp circular edge the parts B and A until theplane of the flanged end of the rivet-guide about coincides with theplane of the top of the rivetstand or anvil and the upper end of therivet protrudes through the part A and has received and been upset bythe thrust of the swaging-point, and clamped back upon the top of part Aby the shoulder 17, so as to secure or rivet the parts A and B firmlyand reliablytogether. The hand-wheel 18 is now turned in the reversedirection to withdraw the plunger, and as the latter rises the spring 21relevates the riveted parts A and B to their original position. Thewithdrawal of the plunger continues until the swaging-point is withdrawnfrom the rivet in order to permit the riveted parts to be more easilypositioned to receive an additional rivet or withdrawn from the machine.

In the above action it will be noticed that the rivet-guide by snuglyembracing the head of the rivet prevents the slightest lateral movementof the latter in order that the swaging-point may positively enter itand the rivet be properly set, and it will also be noticed that theflanged upper end of the spring-elevated guide affords an extendedbearing or table for the parts being riveted.

It will be apparent also that a plunger having a rotary action Will moreefficiently upset the rivets than a plunger having only a reciprocatorymovement, and though it is to be understood that I do not restrictmyself to the use of a rotating or screw plunger I have illustrated thesame as the preferred embodiment of my invention.

The special object of the cavity 12 in the top of the rivet-stand is toaccommodate the swaging-point 16 and prevent blunting it in case theplunger is screwed down with no rivet or material intervening, in whichcase the circular face of the rivet-stand receives the thrust of theshoulder 17 of the plunger and checks its further movement.

The machine described can be used for setting rivets in belts of thehardest leather, rubber, canvas, or any other material, as by utilizingthe principle of the screw an immense leverage can be obtained with amachine that can be conveniently placed in a coat-pocket. For shipmentthe plunger can be removed from the yoke and the latter from themagazine-base in order that the machine may be packed in as small andcompact a package as possible.

It is to be understood that while I have shown throughout the preferredembodiment of my invention I do not wish to be restricted to the preciseform, proportion, detail construction, or arrangement of parts, asvarious changes may be made without departing from the spirit and scopeor sacrificing any of the advantages of the invention.

Having thus described the invention, what I claim as new, and desire tosecure by Letters Patent, is

In a machine for setting tubular rivets, a hollow base, a cover thereon,an eccentric rotatable locking-plate mounted above said cover andengaging lugs on said base, ayoke integral with said cover and providedat its upper end with a threaded sleeve carrying a vertically actingplunger, in combination with a cylindrical rivet-stand integral withsaid yoke and cover and in axial alinement with said plunger, a tubularflanged rivetguide telescopically mounted on said stand, and a spiralsupporting-spring between the flange of said guide and the base of saidyoke, and inclosing said stand and guide,substantially as set forth.

In testimony whereof I afiixmy signature in the presence of twowitnesses.

JACOB H. CASSIDY.

Witnesses:

M. R. REMLEY, H. O. RODGERS.

